Fanuc A20B-3900-0151 02B DRAM Module is a memory expansion component for Fanuc CNC controls, identified by the part number A20B-3900-0151. This DRAM module provides volatile memory to support the controller’s programs and data during operation in Fanuc control systems. The 02B designation specifies the module’s revision level, making it suitable for matching with compatible Fanuc A20B-3900-0151 control hardware.
